Stoneyridge related contents of 3rdparty/blobs/southbridge/amd/kern were moved to 3rdparty/blobs/southbridge/amd/stoneyridge. Commit the new blob to coreboot, and modify src/soc/amd/stoneyridge/Kconfig to use it. BUG=b:69613465 TEST=Build and run kahlee. Change-Id: I1784824dc7767c620e2fcbad7c6e5674934832ff Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com> Reviewed-on: https://review.coreboot.org/23125 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>